Today we continue with our series of lectures on diet and society in the 21st century.
We are all aware of the obesity epidemic facing our society.
The reasons for this are well documented and are mainly due to poor eating habits coupled with too little exercise.
In fact, a national health and nutrition survey here in the U.S. concluded that the average total food intake increased considerably between the years 1971 and 2000.
This appears to be a general trend across most age groups.
In fact, apart from the over 60s, all areas of American society are consistently above the dietary guidelines for caloric intake and saturated fat.
However, total fat consumption is highest for teenagers and there is a clear correlation with fast food consumption.
Among the wide range of factors influencing an individual's dietary choices, one of the strongest influences is the home.
It will come as no surprise that within a family the fat intakes of husbands and wives and parents and children who cohabit are remarkably similar.
Many people assume that this relationship indicates the influence of parents on their children, but we wanted to ask if children influence poor diets in adults.
This hypothesis had not been tested in a national sample until now.
In our study, we focused only on adults and we set our lower age limit at 17 and the upper one at 65.
The key variable was the presence or absence of children, so we identified only those adults whose children were under 17.
Other variables included the age of the adult, level of education they had reached, their ethnic background, their income, and foreign-born status.
To obtain our data, first we conducted interviews in the respondents' own homes and, all in all, we interviewed 6,600 adults aged over 17.
Then we invited them to mobile examination centers where surveys were conducted.
From this information, we were able to focus not only on the total fat intake but also on the person's total caloric consumption.
Our results show that the presence of children led to significantly higher levels of both fat consumption and saturated fat in adults.
We found, on average, that adults with children in the home ate 4.9 grams per day of fat more than adults without children.
This result is consistent irrespective of race, gender, or age.
The foods more commonly were convenience items high in fat or sugar, including pizza, salty snacks, and ice cream.
Interestingly, there is a significantly higher percentage of adults in this group who drink milk.
There are many explanations for this increased fat intake.
Hectic schedules where parents try to balance work, family, and leisure put time at a premium.
Another issue is children's preference for fatty foods or foods with a high sugar content.
Fast foods and ready-to-eat foods are convenient choices.
It is inconvenient to prepare different meals for both the children and the parents, so it is likely that adults consume the same as their children.
Of course, there were limitations to our study.
One of these is that we did not take into account the number of minors in each household.
